On the developmental contour of child language: a reply to Smith & Weist.

A developmental perspective in child language research begins with a focus on the child and the processes that contribute to change in the child's knowledge of language. Developmental change occurs in an organized, systematic way, with later changes influenced at least in part by developments at an earlier time. The acquisition of tense and aspect provides a relevant example. Data previously published by Weist, Wysocka, Witkowska-Stadnik, Buczowska & Konieczna (1984) are reanalysed here to show, statistically, that children learning Polish are influenced by aspect in acquiring verb tense, just as children are in learning English, Italian, Hebrew, Turkish and other languages. Children beginning to learn verb infections find aspectual contour particularly compelling in leading them to learn tense distinctions.